Carbureter for gasolene-engines.



* PATB'NTED MAYl'z, 1903.

7G. KINGSTON. cANBUNBTER-NQR GAsoLNNN ENGINES.

APPLIUAT'IQN FILED 00T. 3, 1902.

.No MODEL.

Wc'zesses:

` Ninn STATES;

atented May i2, 1903 GEORGE KINGSTON, OF KOKOMO, INDIANA.

l CARBURETER FOR GASOLENE-ENGINES.

SPECIFICATION forming part of Letters Patent No, 727,972, dated May 12,1903.

Appiiotuuutiedoaober3,1902. seritiiimlzavfzz. (Nomade.)

To all whom it may concern: Y

Be it known that I, GEORGE KINGSTON, a citizen of the United States,residing at Kokomo, in the county of Howard and State of Indiana, haveinvented new and useful Improvements in Oarbureters forGasolene-Engines,of which the following is a specification.

My invention relates to improvements in oat-feed carbureters forgasolene-engines, and has for its object the provision of a carbureterof new and novel constructionfneat and attractive in appearance, strongand durable in its parts, performing its work accurately, and perfectlynoiseless .in its action.

Another object is to provide Ya carbureter that will give perfectcontrol over an automobile-engine, that can be adjusted to de. liver aperfect mixture atv extremely low speedsthis accomplished `the enginewill' start easy, it not being necessary to flush the carburetor as iscustomary with iioat-feed carbureters-then by opening throttle,consisting of air-valve and fuel-valve, by a move- -ment of leverattached to air-valve to attain any required speed with a perfectlyuniform mixture.

Another object is to provide a carbureter not materially aected bychanges in atmospheric conditions.

The invention consists in a carbureter embodying certain novel featuresand details of construction and relative disposition of parts, ashereinafter particularly set forth, illustrated in the drawings, andincorporated in the claims hereunto appended.

With the above-enumerated objectsin view I will now refer to theaccompanying drawings, in which- Figure l is a plan or top view ofcarbureter constructed in accordance with myinvention. Fig. 2 shows avertical cross-section on line A B, in which the combinations ofprincipal parts of my invention are clearly shown.

Similar letters of reference denote and refer to similar partsthroughout the different views.

Jn represents the float-chamber.

F represents the lioat, which at present I prefer to be made of corkWell coated with shellac.

h represents the metal ball-valve seating in 'u with fuel connection atG.

r represents the valve-stem, to which the balland lioat are rigidlyconnected, as shown.

H represents the air-chamber.

ot represents the fuel needle-valve. D represents the air-regulatingvalve. d is a lug .cast on air-valveand used as an adjustable stop,y itbeing provided with a screw and clamp to hold screw firmly afteradjustment is made.

e represents a lug cast on the main casting and remains stationary,forming a stop ford, this screw adjustment at CZ to be used for thepurpose of adjusting throttle for low speed.

s represents a clamp, having a fork on one end for making a looseconnection with d, the other end forming a clampwith screw-tension forlocking same too-after the required adjustment is made.

L represents the lever rigidly connected to D for operating a and` D,together forming the throttle.

f t represents the fuel-spraying nozzle, whichis a small opening in tubeprojecting from cavity shown around needle point of a. This opening intube is placed in the apex of V-shaped orifice leading to the engine.This orifice is shown in drawings partly closed by air-valve, as inlow-speed position.

i C represents the delivery or outlet leading from V-shaped orifice tothe engine.

. I represents air-inlet to air-chamber of carburetor.

' M M represent baffle-plates, which are thin semidisks or bridges castintegral with H and closing one-half the opening in each case fromopposite sides and doing service as baiieplates, keeping the mixturefrom being forced back out I by reaction or backlash of enginevalves,also as a silencer for I, as they muffle the inrush of air at I.

S represents al spring for retaining throttle in low-speed position uponrelease of L.

V represents a conduit leading from floatchamber J and terminating at tat 'the apex of V-shaped orifice leading to engine, the iiow of fuelthrough V being controlled by needle-valve a.

In operation connect C to inlet-port on engine as close as possible, asthe engine will respond more quickly to throttle if connected close tointakevalve. Connect fuel at G with head enough to work the float. WhenICO chamber is filled so that float shuts off fuel, adjust throttle forlow speed, screw ct down to seat, and then open slightly and try theengine. When engine starts, adjust a, until the desired mixture isobtained. Then clamp s to a, open L, and the engine will speed up underthe proper mixture. Releasing L it will return to lowspeed position andmay be stopped and started again at any time without making any furtheradjustment.

It is apparent that to make an engine start easyt must be placed at apoint where the velocity of air rushing through the carbureter isgreatest. Hence my method of placing it in throttle-opening. It is alsoapparent that the pitch of the screw and taper of need1e-point on a mustcorrespond with the shape of air-opening to make delivery perfeet at allspeeds.

Having now fully shown and described my invention and the best design tome known at this time, what I claim as new, and desire to secure byLetters Patent ot' the United States, is-

1. In acarbureter, the combination with an air-chamber, of a pipecommunicating therewith by a V-shaped ori tice and leading to theengine, a float chamber containing liquid fuel, a conduit leading fromsaid chamber and terminating at the apex of the V-shaped orifice, avalve constructed to vary the area of said orifice and control the flowof air therethrough, a lug carried by said valve, a needle-valve in thefuel-conduit to control the flow of/fuel, a clamp carried by saidneedlevalve having a loose connection with said lug, whereby the openingor closing of the airvalve will open or close the needle-Valve, twobaille-plates to prevent mixture from being forced back through and outof air-chamber hy reaction or backlash of engine-valves, theHoet-chamber containing oat, valve-stem and ball -valve rigidlyconnected together, the ball-valve seating on lower side of seatin thebottom or top of iioat-chamber` by rising of float attached to stem, asmeans for controlling the required fuel-level, substantially asdescribed.

2. In acarbureter,the combination with the air-chamber, of a pipecommunicating therewith by a V-shaped orifice and leading to the engine,a ioat -chamber containing liquid fuel,a conduit leading from saidchamber and terminating at the apex of the V-shaped oriice, a Valveconstructed to vary the area of said orifice and control the flow of airtherethrough, a lug carried by said valve, a needle-Valve in thefuel-conduit to control the iiow of fuel, a clamp carried by saidneedlevalve making a loose connection with said lug, whereby the openingand closing of airvalve will open or close the needle-valve, thefloat-chamber containing float, valve-stem and ball-valve rigidlyconnected together, the ball-valve seating on lower side ot' scat in thebottom or top of float-chamber by the rising of float attached to stem,as means for controlling the required fuel-level, substantially asdescribed.

3. In a carbureter, the combination with an air-chamber, of a pipecommunicating therewith by a V-shaped orifice and leading to the engine,a float-chamber containing liquidfuel, a conduit leading from saidchamber and terminating at the apex of the V-shaped oritice, a valveconstructed to vary the area ot' said orifice and control the flow ofair therethrough, a lug carried by said valve, a needle-valve in thefuel-conduit to control the iiow of fuel, a clamp carried by saidneedle-valve having a loose connection with said lug, whereby theopening or closing of the airvalve will open or close the needle-valve,substantially as described.

In witness whereof I have hereunto set my name in presence of twosubscribing witnesses.

GEO. KINGSTON.

Witnesses:

F. L. KINGsToN, R. J. CRANE.

